We chose Yimmy's because it was across the street from a venue where our friend was getting married (our friend recommended it as a possibility). It was perfect for her wedding but, as tourists (which we were), even if our friend wasn't getting married nearby it was still an ideal location. It is just a few short blocks to the BTS that connects you to numerous places in the city - and this specific BTS was only one stop away from the ferry system that can take you to several tourist destinations along the river (including the Grand Palace). I admit the ferry was my favorite way to travel.
There are so many great restaurants in the area (many more than we got a chance to try during our week-long stay) - including a really nice breakfast place right next door (Pearl Bakery).
In a few reviews I read beforehand noise was mentioned but it is just a bit from the street and once you close the shutters at night I felt like it was not an issue at all. A great place - comfy and convenient